Men are the most boring when they reach 39 years of age according to a new survey conducted by Airbnb.

A new study has shown that most men reach their boring peak at almost 40 years of age, as this is when they have completed many of the things which people deem to be exciting tasks.

The research was carried out by home rental site Airbnb, who surveyed 2,000 people in an attempt to work out the optimum age for boredom and excitement.

According to their results, people are most likely to be be trekking across the desert, dancing on bar counters or taking up base jumping at the age of 27, and become more dull when they take on more responsibilities after entering their 30s.

Women, however, allegedly reach their optimum age of ''boring'' earlier than men, with the survey suggesting they become dull at just 35 years old.

According to those polled, things that make people fun include: Staying out until the early hours on a weekday, trying a new hobby, going out of the way to make a new friend, booking a spontaneous holiday, learning a new skill, visiting a friend unannounced, changing jobs, going on a spontaneous shopping trip, asking someone out on a date, and trying a new sport.